Attachment eoe



J. C. LOHSE.

ATTACHMENT FOR FURNACES. APPLICATION FILED mm. 19 me.

Patented D00. 16,1919.

INVENTOR' h ATTORNEY JOHN C. LOI-ISE, GLEN RIDGE,

ATTACHMENT non FURNACES.

Specification of Letters Patent.

Patented Dec. 16, 1919.

7 Application filed March 19, 1919. Serial No. 283,549.

To all whom it may concern:

Be it known that I, JoHN C. LOHSE, a citizen of the United States, residing at Glen Ridge, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Attachments for Furnaces, of which the following is a full, clear, and exact description.

My invention relates to mechanism for facilitating combustion in furnaces, so as to thoroughly burn the smoke and combustible gases and thus to attain economy in the use of the fuel and to increase theheating capacity of the furnace, as well as to promote cleanliness in the handling of. the furnace and to reduceto a minimum the nuisance otherwise arising from pollution of the atmosphere by the escape of the smoke and combustible gases.

' WVhile my device may be built into the furnaceat the time of its 'manufacture, I prefer to use it as an attachment, to be applied to the furnace at anytime after the installation thereof. 7

Reference is made to the accompanying drawing forming a part ofthis specification, and in which like letters indicate like parts throughout the several figures.

Figure l is a front view, partly in elevation and partly broken awa of a furnace to which my device has been applied.

Fig. 2 is a section on the line 22 of Fig. 1, looking in the direction indicated by the arrows.

Fig. 3 isa top view of my attachment, showing the same as partly in plan and partly broken away. V

Fig. 4 is a section on the line 44 of Flg.

'3, looking in the direction of the arrows.

'A furnace appears at 5, and is provided with a water jacket'6 serving as a boiler. A steam pipe as shown at 7, is provided with a portion 8 bent back and forth asrindicated in Fig. 2, and exposed to a high temperature.

Steam passing into the furnace through this pipe is superheated. V

An air pipe appears at .9 and is used for carrying air into the furnace,this airbeing heated while passing through the pipe.

The air pipe 9 carries a T 10, and connected with this T are two nozzle pipes 11, 12, the pipe 11 extending upwardly and the pipe 12 extending downwardly. Each of these nozzle pipes is threaded as shown. Nuts 13, 14 and washBI-S 15, 16am fitted upon th n zzl p pes.

A pair of rose plates are shown at l7, l8

and are mated to each other as indicated in Fig. 4. The rose plate 19 has the form of a rather shallow dome, and is provided with perforations 19.

The rose arranged in annular rows disposed concentrically, as maybe understood from Fig. 3.

plate 18 is provided with peri The rose plate 17 is provided with an annu- V in shoulder 21, into which is neatly fitted the peripheral edge of the plate 18. This plate 18 is provided with a middle portion 22, which is curved to form a pocket. I The rose plates 17 18 are respectively provided with holes through which extend'the nozzle pipes 11, 12.

The rose'plates are held together by the nozzle pipes 11, 12 and T 10, these parts for this purpose acting like a bolt, the nuts 13,

14: serving to exert pressure upon the rose plates and clamp them firmly together. Thus clamped together they together constitute a rose nozzle. 2

The rose nozzle just described is provided with portions 23, 24 formed into bearings, and through these bearings extend the inner end portions of the steam and air pipes. lVhile the'air' pipe is connected to the T 10, as above described, the steam pipe opens directly into the rose nozzle. The result of this arrangement is that superheated steam is'discharged from the "perforations in the rose nozzle, and hot air is discharged immediately above and below the from-the nozzle pipes 11, 12.

A crossbar-25 mounted upon the inner walls of the furnace, supports the weight of the rose nozzle and parts immediately associated therewith. The cross bar engages the lower side of the rose plate 18, the nozzle rose nozzle pipe 12 extending downwardly through .a 7

hole midway between-the ends of-the bar.

" The rosenozzle is located a little distance above the fuel bed-,ofthe furnace, and in such position as to be heated constantly 'to a high temperature, and as far as practicable enveloped in the smoke and unburned gases.

In the region thus contemplated,my 'device delivers superheated steam discharged from the apertures of the rose nozzle, and

the supply of super 7 ture conditions as to promote thorough combustion.

Sometimes it happens, especially in starting the furnace into action, that water of condensation may collect in the rose nozzle. lVhen this occurs the water runs down into the pocket 22, and there remains until converted into steam by the heat, whereupon it nnngles with the other steam present and is discharged therewith, through the apertures in the rose nozzle.

The operation of my device is. as follows:

The parts being assembled and arranged as above described and as shown in the drawing, a fire is started in the furnace and steam is raised in the boiler, and steam and hot air are admitted as above set forth.

The smoke and unburned gases are thoroughly intermingled with each other and with the hot air and superheated steam, and are thus efiectively burned. Practically all carbon monoxid and smoke are eliminated. The gaseous matter finally escaping is almost colorless and odorless, and contains a relatively high percentage of carbon dioxid. There. is a noticeable saving in the fuel required, other factors being equal, and low grades of fuel can be employed to advantage in connection with my device.

I do not limit myself to the precise construction shown, as variations therefrom may be made without departing from the spirit of my invention.

I claim- 1. The combination, with a furnace having a rose nozzle mounted therein and means for supplying steam into said rose nozzle, of an air pipe extending into said rose nozzle, and a nozzle pipe connected with said air pipe and extending outwardly therefrom and from said rose nozzle, in order to deliver hot air into proximity to the outside of said rose nozzle.

2. An attachment for facilitating eombus tion in furnaces, comprising a rose nozzle provided with perforations for discharging steam, a steam pipe connected with said rose nozzle for supplying steam thereinto, an air pipe extending into said rose nozzle, and a pair of nozzle members connected with said air pipe at points within said rose nozzle,

and extending outwardly from said rose nozzle in order to discharge hot air outside of said rose nozzle, but in immediate proximity thereto.

3. In an attachment for facilitating combustion in furnaces the combination of a rose nozzle, means for supplying steam thereinto, a T located within said rose nozzle, an air pipe connected with said T, and a pair of nozzle pipes connected with said T and extending outwardly in opposite directions from said rose nozzle.

4c. in an attachment for facilitating combustion in furnaces the combination of a rose nozzle, means for discharging steam freely thereinto, a T disposed within said rose nozzle, nozzle pipes connected with said T and extending outwardly from said rose' nozzle, said nozzle pipes being threaded, and nuts mounted upon sald nozzle plpes so as to normally hold the same fixed relatively to said rose nozzle.

5. In an attachment for facilitating combustion in furnaces the combination of a steam pipe, a rose nozzle connected therewith to receive steam therefrom, said rose nozzle having perforations for discharging steam and a pocket for holding water formed by condensation of steam, an air pipe leading into said rose nozzle, and a nozzle pipe connected with said air pipe and extending outwardly from said rose nozzle.

6. A deyice of the character described comprising a pair of rose plates provided with perforations and fitted together so as to form a rose nozzle, means for supplying steam into said rose nozzle, a T disposed within said rose nozzle, nozzle pipes mounted upon said T and extending therefrom in opposite directions through said rose plates, nuts mounted upon saidnozzlepipes and dis posed outside of said rose nozzle in order to exert pressure upon said rose plates to squeeze them together, and meai s for supplying air into said T.

7. In an attachment for facilitating combustion in furnaces the combination of a pair of rose plates one having an annular shoulder and the other having an annular edge fitting against said annular shoi'ildcr, each of said rose plates having perforations and a centrally disposed hole, means for admitting steam between said rose plates, a T located between said rose plates, means for supplying air to said T, nozzle pipes connected with said T and extending outwardly through the cent-rally disposed holes in the rose plates, said nozzle pipes beingthreaded, and nuts mounted uponsaid nozzle pipes for the purpose of squeezing said rose plates together.

Jonu 0. zones. 

